/Engine/Plugins/Runtime/NetworkPrediction/Source/NetworkPrediction/Public/NetworkPredictionComponent.h
The actual ServerRPC. This needs to be a UFUNCTION but is generic and not dependent on the simulation instance.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(Server, Unreliable, WithValidation) void ServerReceiveClientInput ( const [FServerReplicationRPCParameter](API\Plugins\NetworkPrediction\FServerReplicationRPCParameter) & ProxyParameter )